Sharpener



FIG. 1 is a perspective view of the sharpener showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines depict portions of the sharpener in which the design isembodied that are not considered part of the claimed design.

CLAIM The ornamental design for a sharpener, as shown and described.